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Z240117 Aldrich

Whatman® qualitative filter paper, Grade 1

circles, diam. 185 mm, pack of 100

Synonym: Whatman filter, Whatman paper, paper filter

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Properties

Related Categories Filtration Supplies, Labware, Manufacturer Browser, Paper Filters, Qualitative,
material   cellulose filters
  circles
packaging   pack of 100
mfr. no.   Whatman Article No., 28413919 (US reference)
  Whatman, 1001-185
parameter   0.25 psi wet burst
  150 sec/100 mL speed (Herzberg)
diam.   185 mm
thickness   180 μm
ash   ≤0.06%
pore size   11 μm (Particle retention)
basis weight   87 g/m2

Description

General description

These cellulose filters are used in qualitative analytical techniques to determine and identify materials. Prepleated qualitative filters are also available, which give improved flow rate and increased loading capacity compared to equivalent flat filters.

Grade 1: 11 μm (medium flow filter paper)
The most widely used filter paper for routine applications with medium retention and flow rate. Extended range of sizes includes 10 to 500 mm diameter circles and 460 x 570 mm sheets.

This grade covers a wide range of laboratory applications and is frequently used for clarifying liquids. Traditionally the grade is used in qualitative analytical separations for precipitates such as lead sulfate, calcium oxalate (hot), and calcium carbonate.

In agriculture, it is used for soil analysis and seed testing procedures. In the food industry, Grade 1 is used for numerous routine techniques to separate solid foodstuffs from associated liquid or extracting liquid and is widely used in education for teaching simple qualitative analytical separations.

In air pollution monitoring, using circles or rolls, atmospheric dust is collected from airflow and the stain-intensity measured photometrically. For gas detection, the paper is impregnated with a chromogenic reagent and color formation quantified by optical reflectance.

Other Notes

Global SIAL customers (excluding Japan) can now order any product from the GE Healthcare Life Sciences consumables portfolio (prepack only) using GE′s product numbering system.

The legacy GE Whatman products that use the SIAL "Z" product numbering system will be discontinued and directly replaced with a product number using a "WHA" prefix plus the GE product code. For reference, the legacy "Z" product number is identified as a synonym on the "WHA" product number listing.

This product has been replaced by WHA1001185-ALDRICH | Whatman qualitative filter paper, Grade 1, circles, diam. 185 mm, pack of 100

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Whatman is a registered trademark of GE Healthcare

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WHA1001185 Whatman® qualitative filter paper, Grade 1, circles, diam. 185 mm, pack of 100

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